Randomness Attractors

Hello , I have a set of polylines and I want to randomly select some of them ,

but the random selection needs to be more possible in certain areas, as if it was attracted by an attractor . I would like to control this attractor's strength

Does anyone have any ideas how this could be done?

Thank you .

Replies to This Discussion

Permalink Reply by David Rutten on December 3, 2012 at 8:41am

You need to combine a random and a non-random component to have a falloff which is both controlled and random. See attached for one example.

David Rutten

david@mcneel.com

Poprad, Slovakia

Attachments:

RandomFalloff.gh, 13 KB

Permalink Reply by DIMITRIS VENIZELOS on December 3, 2012 at 8:50am

I already have the points ( the points are not random) and I need to randomly select some of them , but I quess this will also work in my case, I just need to adopt is a bit.

thanks

Permalink Reply by Mateusz on December 5, 2012 at 2:38am

Maybe something like this? It's very simple but You can get the idea. There is shared strength for every attractor and it prevents double attraction when areas are intersecting.

EDIT: Meh, I just noticed that i made it for 2 attractors and you cannot easily add more but still you can get the idea.

Attachments:

random_attractor.gh, 23 KB

Permalink Reply by DIMITRIS VENIZELOS on December 5, 2012 at 6:58am

I can see your idea and yes that is more likely what I was thinking, but in the definition I cannot see the actual selected points. Am I missing something ?

Permalink Reply by Mateusz on December 10, 2012 at 12:59am

Sorry for late reply, I forgot that i turned off mail notice. What do you mean by selected points?

Permalink Reply by DIMITRIS VENIZELOS on December 10, 2012 at 11:39am

Hi Mateusz , the thing is that I have a list of points (lets say 1000 points) that are already defined and I want to randomly select the 200 of them, giving a higher possibility of selection in some areas.
In your definition I see the areas of attraction, but I cannot see the points that are finally selected .
Unless you mean that the points inside the circles are the ones selected.

Permalink Reply by Mateusz on December 11, 2012 at 12:09am

Yes, that's how it works, it chooses points inside circles. I don't really know what exactly you want to achieve (any example?) so it's hard to help :)

Permalink Reply by DIMITRIS VENIZELOS on December 11, 2012 at 2:26am

I guess David Rutten's suggestion is closer to what I was thinking. Its fine dont worry, I can slightly modify David's def and it will do .

Thank you for your interest

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